package org.example.java.util.colls;

import java.io.IOException;
import java.util.Hashtable;

/**
 * Created with IntelliJ IDEA.
 * User: ZhangJuntao
 * Date: 13-3-4
 * Time: 下午12:44
 */
public class HashtableTest {
  public static void main(String[] args) throws IOException {
    Hashtable<String,String> table= new Hashtable<String, String>();
    table.put("a","a");
    table.put("a","1");
    table.put(null,"1");
    table.get(null);
    System.out.println(table.size());
  }
}
